The sky on January 28, 2020 — as it really was
That day the Sun stood in Capricornus, while the horoscope says "Aquarius". The gap is 24.1° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 308.0° · sign Aquarius · constellation Capricornus
- ☽︎ Moon — 348.2° · sign Pisces · constellation Aquarius
- ☿︎ Mercury — 320.1° · sign Aquarius · constellation Capricornus
- ♀︎ Venus — 347.7° · sign Pisces · constellation Aquarius
- ♂︎ Mars — 257.0° · sign Sagittarius · constellation Ophiuchus
- ♃︎ Jupiter — 282.9° · sign Capricorn · constellation Sagittarius
- ♄︎ Saturn — 294.6° · sign Capricorn · constellation Sagittarius
- ☽︎ Moon 12% illuminated
astronomy-engine ephemerides (VSOP87/ELP), IAU 1930 constellation boundaries. Positions accurate to a fraction of a degree.
The day’s dossier, from real data
Checkable facts with a tag and a source; the classical reading is in the chart.
- The Moon that day [EXACT]
waxing crescent, 12% lit; the Moon was 404,364 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
6.7 orbits of the Sun — 6,284 million km, that is 8,174 return trips to the Moon; 2,442 rotations of Earth; with the Sun — 48.5 billion km around the Galactic centre, 1.9 light-days.
29.78 km/s along the orbit; 230 km/s around the Galactic centre - Mars then and now [EXACT]
On that day Mars was 296 million km away; today it is 244 million km (closer by 1.2×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 25, right at the minimum (2% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on August 7, 2027; Jupiter — in 2032; a full moon exactly on this date — January 27, 2032
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 324″ since that day; the real constellations now sit 24.1° away from the astrologers’ “signs”.
precession 50.29″/yr - Picture of the day [EXACT]
NASA Astronomy Picture of the Day for this date: apod.nasa.gov/apod/ap200128.html
NASA APOD
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